Let p be the percent decrease in the price of a dvd recorder that is marked down from $500 to $400. which proportion can be used to compute p? a. $500-$400/$400=p/100 b. $500-$400/$500=p/100 c. $400-$500/$500=p/100 d. $400-$500/$400=p/100

The correct answer is C. $400-$500/$500=p/100.

The formula for percent change is as follows.

New - Old/ Old = Percent change.

With 500 being the old score, we would look for it to be subtracted and on the bottom. C is the only option that has that.

the answer should be a. snail

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock